Figure 6.

Glial populations form normally in Satb2 knockout mice. Glial populations within the commissural plate at E17 include the indusium griseum glia (IGG) at the dorsal limit of the MC₁, the glial wedge (GW) at the ventral limit of the MC₁, and the midline zipper glia (MZG) also at the boundary of the MC₁ and MC₂. A small population of glia surrounds the AC at the boundary of the SA₁ and SA₂. These populations can be seen in the wildtype CoP in A. In Satb2^−/− mice all glial populations are present and appear normal (B). The indusium griseum glia and midline zipper glia are usually split by the formation of the corpus callosum but this does not occur due to the absence of the corpus callosum in Satb2^−/− mice. Scale bar = 400 μm.